Update version to 2.0.9

Update version to 2.0.8

Merge branch 'master' into release/v2.x

Update on-release.sh

Update Arduino version to 2.0.5

Rainmaker library extension (espressif#6813)

* Added definitions for various parameters and UI types.

* Overload for `const char*` added.

* Function `addValidStrList` added.
This is needed for mode parameters (see example RMakerCustomAirCooler.ino).

* Example of a custom device that uses toggle, mode and range parameters.

* Revert: Added definitions for various parameters and UI types.

* Fixed declaration for addValidStrList

* Fixed missing gpio definition for ESP32C3 target

Co-authored-by: Me No Dev <me-no-dev@users.noreply.github.com>

Fix uploader tool for ESPduino32 board (espressif#6665)

Update toolchain to gcc8_4_0-esp-2021r2-patch3 and esptool to 3.3 (es…

…pressif#6497)

* Update toolchain to gcc8_4_0-esp-2021r2-patch3

* Update esptool to 3.3

* Remove old files

* Update package_esp32_index.template.json

* use esptool v3.3 (espressif#6498)

could be used for all. Nice would be releasing in Platformio registry.

* Switch toolchain for PIO CI

Co-authored-by: Jason2866 <24528715+Jason2866@users.noreply.github.com>

Implement SigmaDelta based on ESP-IDF API (espressif#6053)

Summary

This PR is refactoring of SigmaDelta HAL in order to use IDF instead of current Register manipulation approach.

Impact

Change in API:

uint32_t sigmaDeltaSetup(uint8_t channel, uint32_t freq);
changed to -->
uint32_t sigmaDeltaSetup(uint8_t pin, uint8_t channel, uint32_t freq);

void sigmaDeltaAttachPin(uint8_t pin); removed, no longer needed. Pin is attached in sigmaDeltaSetup()

Update package_esp32_index.template.json